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If 10^(21) molecules are removed from 20...

If `10^(21)` molecules are removed from 200 mg of `CO_(2),` the number of moles of `CO_(2)` left is

A

`2.88xx10^(-3)`

B

`28.8xx10^(-3)`

C

`0.288xx10^(-3)`

D

`1.66xx10^(-2)`

Text Solution

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The correct Answer is:
A
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NCERT FINGERTIPS-PRACTICE PAPER 3-Practice Paper 3
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  6. Which set of quantum numbers is possible for the last electron of Mg^(...

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  7. Which of the following reactions is said to be entropy driven?

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  9. The ions O^(-2),F^(-),Mg^(2+) and Al^(3+) are isoelectronic. Their ion...

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